Crosman 1720t depinger ???

I recently picked up a Crosman 1720t tactical that I really like. I've added a Hill LDC and would appreciate any input on whether a depinger is needed. It will primarily used for punching paper indoors and backyard pesting. If a depinger is added, do I remove the fill port assembly with a crescent or box wrench. The barrel ban isn't the same as a Mrod. Thanks for any thoughts or recommendations. 
 
Hi. I've only had my 1720t tactical a few weeks, but have put around 1,000 pellets through it. The gun is very accurate and doesn't seem to be pellet picky. It's a lot more accurate than I am... I've used Beeman Kodiak Match 10.65gr, JSB Heavy Diabolol 10.34gr and JSB RS Diabolo 7.33gr. They all grouped well. The JSB 10.34gr giving me my best 5 shot group so far at 15 yards, indoors, rested looked like 1 shot. (I'll try to up load a picture later) I've chronographed the JSB 10.34gr pellets. (30 shoots from 2700-1700 psi: 635fps average, ES 23, SD 6)

Most of my shots have been in my basement at 10 and 15 yards. I'm having a ball with it. I did take it outside Saturday. At 30 yards I was getting estimated 1/4" groups. I use a Hill pump to charge the gun and it takes a little more than one pump per shot :) For my needs it's perfect.... I have added a Hill LDC and depinger. I'm not sure they were necessary, but I really like them both. Out of the box the gun was quiet.
 
Five shot group, rested at 15 yds

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I love mine too. I drilled the transfer port and bumped to power up to 16FPE for 23 shots.
Ref the depinger - I had a MM extension on mine and the gun was so quiet, except for the "ping". It got to the point that it was almost annoying. Got one of the Hill depingers and it's much better. So I say, if ping bothers you it's necessary, it not then not. I did lose 1 shot from 24 down to 23.